The chair I purchased was to replace an old office chair I've had for year. I check the specifications of the new chair to the old, measurements were almost identical new and old so I bought it..What I didn't take into consideration was the physical weight of the chairs, the new is 75% lighter than the old, can just drop down into the seat the chairs will take off on you cuz it's so light, bothersome enough that I wouldn't re- buy it..I think it's good quality chair but the fact that it move almost by just looking at is a problems for me...